Adaptations/ Natural Selection

The rat snake is found in a wide array of environments. They are found in woods, along the coast, in cities, and in mountains. They eat rats, birds, mice, and squirrels. Rat snake populations in these different environments often have varied colors and markings. There are gray ones, yellow ones, black ones, and mixes of these colors, depending on where they live. Which of the following best explains the differences in colors and markings of the rat snake?

• Rat snakes can choose to change their coloring to match the environment theyare in to avoid predators and catch prey more easily.
• Rat snakes with coloring and markings that helped them blend into their uniqueenvironment avoided predators and survived to reproduce.
• Rat snakes began eating different types of food depending on where they live.This changed their appearance over time.
• The variation in the coloring and marking of rat snake populations is so that ratsnakes can recognize other rat snakes that live in the same area.

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How can migration enhance the survival of organisms?

• Migration causes adaptations to occur more frequently.
• Migration helps organisms to avoid predators.
• Migration requires organisms to exert a lot of energy.
• Migration makes finding necessary resources more likely.

Over time, honey suckle flowers developed a sweet smell to attract pollinators. This is and example of _________

• selective breeding
• dichotomous key
• natural selection
• extinction

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Some species of birds are very similar. Each species lives on different island. Which of the following is the best explanation for why one species has a longer beak than the others?

• They need a longer beak for defending itself against predators.
• They originated from a different type of bird than the other species.
• The longer beak is an adaptation to the food available in the bird’s habitat.
• The beak stretched to reach its food and the longer beak was passed down to its offspring.

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Change over time describes.....

• Speciation 
• Selective Breeding 
• Evolution 
• Adaptation 

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Which is not an adaptation of a polar bear? 

• White fur 
• Large Feet 
• Thin Layer of fat 
• Strong Swimmer 

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The process by which organisms with favorable traits survive and reproduce at a higher rate

• Natural Selection 
• Adaptation 
• Evolution 
• Speciation 

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The white feathers of a snowy owl allow it to blend in with its environment during the winter months (snow). This is an example of ________________

• Species
• Environmental Change
• Adaptation
• Variation

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Adaptation is

• the process that makes an organism look better

• the process in which weak organisms are killed off

• the process in which an organism becomes better adapted to its environment

• the process in which oxygen is transformed into glucose

The squirrel in the picture is using an adaptation called

• camouflage

• hibernation

• migration

• retention